TC220 Field Monitoring

Field Monitoring in Geomechanics

It is well known that the real behaviour of geomechanical structures quite often differs from that predicted by numerical analyses carried out at the design stage, even though sophisticated computer programs are often used. This discrepancy may be simply because of the various uncertainties of geomaterials. In order to fill the gap between real and predicted behaviour of geomechanical structures, field monitoring is carried out to verify the input data used in the original design, as well as to assess the integrity of the structures during construction. Nowadays, there are many different monitoring techniques available. However, it should be noted that the field monitoring data are only numbers unless they are properly interpreted.

TC220 helps bring together practitioners, academics and suppliers, to exchange knowledge on field monitoring. For more information visit our website at and use the publications below.

Useful Reading List

Client guide to instrumentation and monitoring. Published by the Chartered Institution of Civil Engineering Surveyors for the Survey Liaison Group, London, 2017.

EN ISO 18674-1:2015 Geotechnical investigation and testing — Geotechnical monitoring by field instrumentation. Part 1: General rules. Published by CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels.

EN ISO 18674-2:2016 Geotechnical investigation and testing — Geotechnical monitoring by field instrumentation. Part 2: Measurements along a line - extensometers. Published by CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels.

EN ISO 18674-3:2017 Geotechnical investigation and testing — Geotechnical monitoring by field instrumentation. Part 3: Measurements across a line - inclinometers. Published by CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels.

Geotechnical instrumentation for monitoring field performance. J. Dunnicliff. Published by J. Wiley & Sons Inc, New York, 1993. ISBN: 0-471-00546-0.

Geotechnical Instrumentation News. Bi-Tech Publishers Ltd, Canada.

ICE Manual of Geotechnical Engineering. J. Burland, T. Chapman, H. Skinner and M. Brown. Chapter 94: Principles of geotechnical monitoring. J. Dunnicliff, W.A. Marr and J. Standing Chapter 95: Types of geotechnical instrumentation and their usage. J. Dunnicliff        Published by ICE Publishing, London, 2012. ISBN: 9780727736529.

Monitoring Underground Construction. The British Tunnelling Society. Published by ICE Publishing, London, 2011. ISBN: 9780727741189.

Use of Inclinometers for Geotechnical Instrumentation on Transportation Projects, State of the Practice. Transportation Research Circular Number E-C129,  October 2008. Transportation Research Board, Washington, DC.

ISO 18674 Part 4 Measurement of pore water pressure: Piezometers is published

There is a new ISO Standard for the measurement of pore water pressure by piezometers. In it you will find recommendations for guidance on types of piezometers and how to install them. The standard can be purchased from

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TRB Webinar: When to Use Fully Grouted Piezometer Installations

On 8th July 2020 the Transportation Research Board (TRB) will host a webinar on "When to Use Fully Grouted Piezometer Installations." 

Webinar agenda and presenters

  1. Introduction, implementation and application, field examples, and research: Joel Swenson,&n

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ISSMGE John Dunnicliff Honour Lecture on Field Monitoring in Geomechanics

TC220 is very pleased to announce a new Honour Lecture named after John Dunnicliff and on the subject of Field Monitoring in Geomechanics.

John is a self-employed consulting engineer, specializing in geotechnical and structural monitoring. He has taken the lead role in teachin

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New International Standard on Total Pressure Cells

The following International Standard has just been published:

BS EN ISO 18674-5:2019. Geotechnical Investigation and Testing. Geotechnical Monitoring by Field Instrumentation. Stress Change Measurements by Total Pressure Cells (TPC).

Purchase it here.

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11th International Symposium on Field Measurements in Geomechanics

The 11th International Symposium on Field Measurements in Geomechanics will take place from 4th to 8th September 2022 at Imperial College London. SAVE THE DATE.

TC220 at ECSMGE in Iceland

Andrew Ridley (Chair) and Paul Burton (Secretary) of TC220 Field monitoring in Geomechanics are both attending the 17th European Conference on Soil Mechanics and Geotechnical Engineering in Iceland next week and would like to hear from anyone who is interested in this new Technic

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New Draft International Standard on Piezometers is available for public comment

A new draft international standard prEN ISO 18674-4 - Geotechnical investigation and testing -- Geotechnical monitoring by field instrumentation. Part 4: Measurement of pore water pressure: Piezometers is available for public comment until 23 September 2019. Anyone who is interes

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Field Monitoring in Geomechanics deals with assessing the performance of engineering structures using instrumentation and other related information. The applications include dams and embankments, structures and foundations, transport infrastructure including tunnels and other underground openings,  open cut and underground mines, natural slopes, land reclamation, repositories for industrial or nuclear waste and offshore structures.

The principal aims of TC220 are:

1.       To organise specialty conferences, symposiums, workshops and short courses dedicated to the subject of field monitoring in geomechanics. To encourage the involvement of a wide range of geo-professionals in these events.

2.       To encourage the preparation of keynote lectures, state-of-the-art lectures including on new technologies, general reports for conferences organised by the International Society, regional conferences and conferences organized by Member Societies.

3.       To promote the inclusion of structural and geotechnical monitoring in universities and at conferences and meetings of other international bodies, thereby encouraging a common culture of learning through field monitoring.

FMGM is an international symposium held every four years since 1977.  TC220 will ensure that this tradition continues and will encourage ISSMGE members to participate in future FMGM Symposia.

TC220 will develop a website dedicated to field monitoring in geomechanics. This will be implemented with the support of companies involved in delivering instrumentation equipment and field monitoring services. The website will be used as a point of reference for disseminating information on monitoring best practice and as a forum for presenting case histories and lessons learned, including on-going discussion groups (blogs).

TC220 will assist with the technical programs of international and regional conferences organized by the ISSMGE.

TC220 will provide fora for all of those involved in the use of field instrumentation, such as manufacturers, installers, design consultants and owner/operators, to improve collective knowledge, support decision making and foster a common culture. This will be done mainly through FMGM Symposia and the website, but also by encouraging universities to include monitoring in curricula and by increasing field monitoring content at conferences and meetings of other international bodies.

# Type Full Name Country
1 Chair Andrew Ridley United Kingdom
2 Vice Chair Giorgio Pezzetti Italy
3 Secretary Paul Burton New Zealand
4 Nominated by TC Chair Peter Lamb Australia
5 Nominated by TC Chair Paolo Mazzanti Italy
6 Nominated Member Josep Raventos Spain
7 Nominated Member Jamie Standing United Kingdom
8 Nominated Member Jonathan Gammon United Kingdom
9 Nominated Member Antoni Laque Spain
10 Corresponding Member Aliasger Haiderali United Kingdom
11 Nominated Member Mohamed Mohideen Sahabdeen Singapore
12 Nominated Member Hisham Mohamad Malaysia
13 Nominated Member tan czhia yheaw Singapore
14 Nominated Member Skevi Perdikou Cyprus
15 Nominated Member Ian Solomon Hong Kong Special Administrative Region
16 Nominated Member Anil Joseph India
17 Nominated Member D. NEELIMA SATYAM India
18 Nominated Member Anthony (Tony) Simmonds United States
19 Nominated Member Laurent BRIANCON France
20 Nominated Member Fabien SZYMKIEWICZ France
21 Nominated Member Mark Talesnick Israel
22 Nominated Member Nikolay Milev Bulgaria
23 Nominated Member Leen De Vos Belgium
24 Nominated Member Yujie Wang China
25 Nominated Member Huafu Pei China
26 Corresponding Member Xingsan Shen China
27 Corresponding Member Jeff Wang Hong Kong Special Administrative Region
28 Corresponding Member Ruiwang Yu Hong Kong Special Administrative Region
29 Corresponding Member Chengyu Hong Hong Kong Special Administrative Region
30 Nominated Member Mahdi Miri Disfani Australia
31 Nominated Member Orhan Inanir Turkey
32 Nominated Member Pierre Choquet Canada
33 Nominated Member Kenichi Soga United States
34 Nominated Member PEDRO COVASSI Argentina
35 Nominated Member MAURO CODEVILLA Argentina
36 Nominated Member Michele Jamiolkowski Italy
37 Nominated Member Paolo Tommasi Italy
38 Corresponding Member Salvatore Grasso Italy
39 Corresponding Member Dario Peduto Italy
40 Corresponding Member Marco Rosone Italy
41 Corresponding Member Gianpiero Russo Italy
42 Corresponding Member Filippo Soccodato Italy
43 Nominated Member Chih-ping Lin Chinese Taipei

Contact Technical Committee : Field Monitoring in Geomechanics

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